Description

When your hydraulic system starts leaking or your equipment isn’t sealing right, it’s usually one of these little troublemakers causing the headache. O-rings might be small, but they do the heavy lifting when it comes to keeping fluids where they belong and dirt where it doesn’t. This 10-pack gives you the exact size you need plus extras for the toolbox.

What You’re Getting

Tough Buna-N rubber construction that handles hydraulic fluid, oils, and everyday farm chemicals without breaking down
70 durometer hardness strikes the perfect balance between flexibility for tight seals and durability for long service
3-1/2 inch inside diameter with 3/16 inch cross-section fits a wide range of hydraulic fittings and cylinders
Ten rings per package means you’ll have spares ready when the next one decides to quit
Direct replacement for worn seals in pumps, cylinders, and hydraulic connections

Built for Real Farm Work

This size works great in plumbing, hydraulics, heavy equipment, automotive, and irrigation systems where you need a reliable seal that won’t let you down during busy season. Whether you’re fixing a loader cylinder, repairing irrigation lines, or rebuilding hydraulic pumps, these rings handle the pressure and keep working through temperature swings and chemical exposure.

Made to Last

Buna-N rubber is the go-to material for agricultural hydraulics because it resists oils, fuels, and most farm chemicals while staying flexible in hot and cold weather. The 70 durometer rating means these rings are firm enough to maintain their shape under pressure but soft enough to create a perfect seal against metal surfaces.

Good to Know

Always clean the groove thoroughly and check for nicks or scratches before installing a new o-ring. A tiny bit of hydraulic fluid on the ring helps it slide into place without tearing. Keep the extras in your toolbox—you’ll be glad to have them when you’re elbow-deep in a repair and discover another worn seal.